Earth is, of course, related to the astrological water signs (Taurus, Virgo, Capricorn), and possesses a lot of the same traits – it is grounded, it brings you back to earth and builds upon solid foundations.
Earth energy is all about the practical aspects of life that concern everyone so much. It can be a solid foundation. It can sometimes even be a little stuck in the mud!
The card itself shows the contours of the earth and all of the things that grow from it, and the riches that can be mined from it. The Earth card deals with the practical nature of industry, possessions, and money. It can talk about thrift, conservation issues, practical matters and all things that grow – birds, bees, humans, flowers, everything else.
If this card has shown up to represent something that you need to embrace to release yourself from Ego, then it is likely that you need to embody at least some of this energy – concerned with (or at least, interested in) money and security, thoughtful about the welfare of the earth, practical etc.
And because of the importance of grounding to balance out work on the Crown Chakra, Earth appearing here would imply: Grounding. Grounding. And more Grounding will be the best way for you to move forward. And to cultivate an acceptance that things will be slower because you are on the earthly plane, not the spiritual one. Invest time in yourself and you will reap the rewards.